Investor Presentaiton

GIBSON ENERGY Transaction Highlights Strategic acquisition that expands and diversifies Gibson's core terminals footprint with attractive financial impact Enhances Gibson's leading liquids-focused infrastructure business with on-strategy acquisition of high-quality export terminal at Ingleside, one of only two Texas Gulf Coast terminals with Very Large Crude Carrier capabilities Strengthens cash flow with >95% of revenue under take-or-pay contracts with investment grade or high-quality counterparties who are existing customers of Gibson (1) Expands Gibson's footprint with connectivity to the world-class Permian basin and provides platform for future infrastructure growth with existing and new customers ■ Delivers immediate mid-teens DCF per share accretion, while significantly increasing scale and diversity(2,3) Aligns with Gibson's key Financial Governing Principles and structured to maintain investment grade ratings and outlooks ▪ Enhances ESG profile by further reducing Gibson's industry-leading carbon intensity (4) (1) South Texas Gateway Terminal LLC 2023E revenue under take-or-pay contracts. (2) DCF, including per share metrics, do not have standardized meaning under GAAP. See "Specified Financial Measures" slide. (3) (4) Accretion figure based on 2024E DCF per share pro forma the Equity Offering and the Debt Offerings (each as defined herein). Based on 2021 Scope 1 and 2 emissions intensity (tonnes of CO₂e per barrel). EXPANDING CORE TERMINALS FOOTPRINT 14

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